Whynter UDF-139SS/UDF-139SSa 13.8 cu.ft. Energy Star Digital Upright Convertible Deep…
- Upright Freezer
- 13.8 cu ft
- 280 watts
- Freestanding
- Better rated than 58%
- More reviewed than 81%
One of the more flexible upright units at this size, with frost free operation as the real selling point. Inspect it thoroughly at delivery before the driver leaves.
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How it ranks among the 35 upright freezers we track
4.2★ across 313 Amazon ratings, Bayesian-smoothed toward the category average.
313 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 35 upright freezers we track - how the scorecard works · full upright freezers data report. Confidence: medium - useful but incomplete evidence.Last refreshed Jun 11, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
Whynter's UDF-139SS is a 13.8 cubic foot upright that converts between freezer and refrigerator with a button press. Freezer mode reaches -11F on the Quick Freeze setting, and refrigerator mode holds a 35F to 46F band, all shown on an LED display.
What buyers usually come here for is the frost free design. Air circulation prevents the ice sheet that builds on a manual defrost box, so drawers keep sliding and packages do not weld themselves to the shelf. It is Energy Star rated, runs on R600a at 42dB or below, and rolls on built in casters so a full unit can still be nudged aside for cleaning.
- 13.8 cu ft convertible upright
- Quick Freeze drops interior to -11F
- Fridge mode range 35F to 46F
- 4 sliding shelves, 4 door shelves, wire basket
Who it's for
Aimed at people adding serious cold storage to a garage, basement or small commercial space, and at anyone who might want fridge capacity one year and freezer capacity the next. If you only need a few cubic feet, this is far more machine than the job calls for.
What buyers say
From Amazon customer reviews.
Owners running two of these side by side in a garage, one as a fridge and one as a freezer, report five years and two years of trouble free service including Florida heat and humidity, and describe them as quiet with low power draw. The frost free operation draws repeated praise from long term owners. Shipping damage is the loudest complaint: several buyers went through multiple units, one arriving with a side caved in as though struck by a forklift. A more serious report involves the door randomly popping open on a level floor, spoiling roughly 600 dollars of beef, and another unit quit around 90 days before restarting after a power brownout.
Strengths and trade-offs
Drawn from this product's published specifications.
- Switches between freezer and fridge duty
- Frost free, no annual defrost chore
- Energy Star rated with door alarm
- Casters make a loaded unit movable
- One temperature for the whole cabinet
- Arrives dented often enough to expect it
- Needs real floor space at 13.8 cu ft
- Door seal strength varies unit to unit
Performance notes
Convertible operation is a thermostat range rather than a separate compartment, so the whole cabinet sits at one temperature. Four sliding cabinet shelves, four door shelves and a wire basket are what make fridge mode practical instead of a novelty. The open door alarm and lock button matter more than they sound on a garage unit, where a door left ajar is not something you notice for hours.
Specifications
| Brand | Whynter |
|---|---|
| Model | UDF-139SS |
| Dimensions & fit | |
| Item Weight | 149 pounds |
| Item Dimensions D x W x H | 30 × 28 × 62 inches |
| Door Orientation | Left |
| Capacity & performance | |
| Capacity | 13.8 cu ft |
| Power & efficiency | |
| Wattage | 280 watts |
| Voltage | 115 volts |
| Construction & materials | |
| Door Material Type | Stainless Steel |
| Color | Stainless Steel |
| Compatibility & installation | |
| Installation Type | Freestanding |
| Included components | |
| Unit Count | 1 |
| Included Components | Freezer/Refrigerator, Wheel rollers, Four sliding cabinet shelves, Four removable freezer door rack shelves, One slide-out bulk storage basket |
| Warranty & support | |
| Warranty Description | 1 year |
| Other details | |
| Item Type Name | Whynter UDF-139SS/UDF-139SSa 13.8 cu.ft. Digital Upright Convertible Deep Freezer/Refrigerator – Stainless Steel |
| Specification Met | UL |
Other Whynter upright freezers
How it compares
This product against the closest alternatives we track in upright freezers.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Whynter UDF-139SS/UDF-139SSa 13.8 cu.ft. Energy Star Digital Upright Convertible Deep…This product | 4.2 / 5 | 313 | 4.0 / 5 |
| Koolatron 1.2 Cubic Feet Capacity White Upright freezerKoolatron | 4.5 / 5 | 111 | 4.0 / 5 |
| HOMCOM Mini Freezer CountertopHOMCOM | 4.4 / 5 | 416 | 3.9 / 5 |
| BLACK+DECKER 1.2 Cu. Ft. Compact Upright FreezerBLACK+DECKER | 4.2 / 5 | 236 | 4.0 / 5 |
| KoolMore 21 cu. ft. Upright Convertible Freezer/RefrigeratorKoolMore | 4.6 / 5 | 43 | 3.9 / 5 |
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Questions about the Whynter UDF-139SS
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Does the Whynter UDF-139SS need manual defrosting?
No. It uses a frost free design, and owners specifically credit that with removing the every other month defrost routine.
How cold does the Whynter UDF-139SS get in freezer mode?
The Quick Freeze function drives the interior to about -11F, colder than a typical freezer setting.
Can the Whynter UDF-139SS run as a refrigerator only?
Yes. A button switches it to a 35F to 46F range, though the entire cabinet changes together rather than splitting into two zones.